Diamond



FIG. 1 is a front plan view of a diamond showing my new design;

FIG. 2 is a top plan view thereof; and,

FIG. 3 is a bottom plan view thereof.

The rear plan view thereof is symmetrical with the front plan view, andtherefore the rear plan view is omitted;

Since the diamond is a circular body, the left plan view and right planview are identical to the front plan view, the left and right plan viewsare omitted.

I claim the ornamental design for a diamond, as shown and described.